Following this puts new work involving it at the top of your briefing, with a note saying why it is there. Links are taken from the source record, never inferred.
FDA supplemental approval of a REMS (Risk Evaluation and Mitigation Strategy) for an existing combination opioid–acetaminophen product; this is a regulatory action, not a clinical trial, and does not report efficacy or safety data.
FDA supplemental approval of a hydrocodone-acetaminophen combination tablet under REMS requirements; a regulatory action, not a clinical evidence base.